Lubricator



'ugfmg 19254.

J. EmcKsDN LUBRICATOR Filed Jan. 4. 1923 Patented ug. 19, i924.

. OFFICE.

JOI-IN ERICKSON, OF B/IADISON, WISCONSIN, ASSIGNORTO MADISON-KIPPCORPOELA; TION, OF IVIADISON, WISCONSIN, A CORPORATION OF WISCONSIN.

Lunnrceron. n t t t Application led Januaryvll, 1923. Serial No.610,618.

To all 'whom it may concer/a:

Be it known that I, JOHN ERICKSON, a citizen `of the United States,residing at Madison, in the county of Dane and State of vWisconsin, haveinvented certain new and useful Improvements in Lubricators, of whichthe following is a specilication.

This invention pertains to improvements in force feed lubricators, theconstruction and advantages of which will be hereinafter set forth indetail.

The lubricator in the form illustrated, is of the type shown and claimedin U. S. Letters Patent No. 1,262,979, issued to William H. Putnam,under date of April 16, 1918, to which reference is had. It is to beunderstood, however, that the invention is not limited to the particularconstruction illustrated in that patent, which is substantiallyduplicated in the present instance with the modification which forms thebasis of the invention predicated thereon.

In the utilization of force feed lubricators of the type shown in thepatent above referred to, and particularly where the lubricator isoperated against high pressures, a pressure will be built up in thebarrel as the plunger is forced down, and there exists in the barrel attimes, a pressure varying anywhere from approximately five to fivehundred pounds or more per square inch. It has been found, in practice;`that where the plunger begins to turn, as it does in the constructionherein described and as set ,forth in the patent mentioned, there is atendency for the pressure to spit back through the intake port. Thepresent invention presents a structure wherein this spitting back orretiow is prevented.

In the drawings,-

Fig. 1 is a sectional elevation of so much of a lubricator as isnecessary to an understanding of the invention;

Fig. 2 a transverse sectional view taken on the line II-II of Fig. 1;

Fig. 3 a similar view showing the pump piston as being rotated from theposition shown in Fig. 2 to that where the discharge port in the pistonis in alinement with the discharge channel leading to the part to belubricated;

Fig. 4 a vertical sectional elevation with the parts in the sameposition as shown in Fig. 3; and

Fig. 5 a perspective View of the pump plunger or piston.

In the drawings, 1 denotes a casing in which are housed thevariouselements of the lubricator, and which casing is adapted to befilled with oil and which latter is `tric 3 mounted thereon, whichfunctions with a yoke e connected by a gimbal joint to the upper end vofthe pump piston or plunger 5. The yoke, through the operation of thewabbling eccentric, moves the plunger up and down and likewiseoscillatesv it about its axis. vThe plunger carries a sector gear whichmeshes with a shrouded gear 7 attached to the upper part of a secondpiston or plunger 8 which works inthe measuring chamber or cylinder 9and which, as set forth in the patent above mentioned, serves toregulate the amount of oil which may be fed into the cylinder 10 inwhich the pump piston 5 operates. A pipe 11 eX- tends from the measuringpumpor element 9 and feeds the oil into a pipe 1:?r which leads to anintake port lformed in the wall of the cylindenxlO. A port or passage 14extends from the cylinder 10 and leads to a delivery pipe, as 15, (F ig.1), which may be extended to any point or element which is to belubricated. The measuring feature is not, however, essential to thepresent invention.

The construction thus far described is the same as in the patent abovementioned. The

plunger or piston 5 is provided with a longitudinally extending feedport 16 and a similarly positioned exhaust port 17. In the instant casethe port 16 is made relatively short, that is to say, it is considerablyshorter than the port 17, whereas in the patented construction abovementioned, said ports are of equal height or length, or substantiallyso. This arrangement of the ports relieves any pressurefwhich may bebuilt up in the barrel or cylinder of the pumping unit, so that therewill not be present a pressure which will cause a spitting back throughthe intake port when the groove 16 comes into registry with port 13.

The operation of the mechanism may be stated briefly as fol1ows,-itbeing understood that Athefy'ojke 4 simultaneously elevates and lowersthe pistons and 3 and likewise causes them to? oscillate about theiraxes toqcarrythe various ports into and out of registry. mln ig. thepistons' are moving downwardly and the intake port 16 is at such timesout of registry with the intake port or passage 13. The oil which h-asbeen drawn in beneath the piston is then compressed and forced outwardlyas the piston. 5 moves down, the oi passing from beneath the piston outthrough the p'ort 'or opening 111. During its downward mo'vement', thepiston `is partially turned and the limit of its downward stroke port 17is carried out of 'registry with the 4vopening 14y and lp'ort 16 isbrought into y'alinernent with the intake passage oropfening 13. Owling, however, to the fact that the port 16 is 'relatively short, anyoil or oil and 'air which may be entrapfp'ed beneath the piston 5 and beun'd'e'r pressure, will be prevented from spitting` back through theport 16 and out through the intake 'opening lor port 13, for at suchtime the parts are in the position shown in Figs. 1 and 2 with the upperend of the port 16 below the intake openingl 'or port 13. rlhis willallow the piston to move upwardly to a sliO'ht extent so as to relievethe pressure, and, in r'a'ct, may be such as to create a slight vacuumand thus 'assist in the drawing in of the` oil as the port 16 `registerswith the ,port or opening 13. lli/Then the parts have moved up to theirlfull extent and the measured quantity; of oil is drawn from the pipe 12into the cylinder 10 below the piston the yoke will impart a movement tothe pistons about their axis and bring the parts into the position shownin Figs. 3 and 4, whereupon upon a downward stroke or the piston 5 `oilwill be forced outwardly from beneath the saine through the port 17 andexhaust port or channel 14, as `above noted.

.hat is claimed is,-

1. In a force feed lubricator, the coinbii'iation of a `cylinder havingintake and eX- hau/st openings extending into the same; a piston workingin said cylinder, said piston having a longitudinal portI extending atone side thereof adapted to 'be brought into registry with the exhaustopening in the cylinder, and a second p'ort arranged at the oppositeside of the piston, said second port being relatively short as comparedto the exhau'stpor't; and means for reciprocating said piston andoscillating the same about its axis, whereby the ports will bealternately brought into alinement or registry with the respectivevopenings in the cylinder and the intake port caused to function withthe intake opening only after the piston has inioved outwardly to agreater or less degree upon` its intake stroke.

2. in `a force reed lubricator, the combination of a cylinder havingintake and `er haust 'opei'iings ,extending into the same; a pistonworking in said cylinder, said l'piston having 'a port upon one sidethereof adapted to be brought into registry with the exhaust opening inthe cylinder, and second port arranged at the opposite side of thepiston adapted to be brought into lregistry with the intake opening,means for reciprocating said piston and oscillating the same vabout itsaxis, the ports being so arranged as to be simultaneously vout or'registry with the openings when the vpiston begins its intake stroke,whereby the ports 'will be alternately brought into alinement orregistry with the respective openings in the cylinder and the intakeport caused to function with the -intake opening only vafter the pistonhas moved outwardly to a greater or less degrec upon its intake stroke.

3. In a force Jfeed lubricat'or, the combination of a cylinder having anintake and an kexhaust opening; a piston mounted in the cylinder; meansserving `to reciprocate the piston and llikewise lto oscillate the sameabout its airis, and an exhaust and an intake port formed in the piston,cooperating with the openings aforesaid, the lintake Yport being soarranged with reference to the intake open-ing as that the intake portand its opening will not register during the in-itial suction movementof the piston, 'and immediately after the exhaust port is closed.

In testimony whereof I have signed my name to this specication.

iol-1N anic-Kees.

